The practical draughtsman's book of industrial design and machinist's and engineer's drawing companion : forming a complete course of mechanical, engineering, and architectural drawing (1863)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Johnson, William, 1823-1864 · Philadelphia : H.C. Baird · leaf 176
t is fittedto the runner by aRyne, made on thebalance principle.The top of the spin-dle is sphericallyshaped, as at o, be-ing passed throughthe collar disc, r,and fitted into aspherical recess inthe under side of thoRyne, q, connectedto tho stone, a. Inthis way, as tho con-nection between… … 168 THE PRACTICAL DRAUGHTSMANS scale, a is the base plate, and u the lower running stone, drivenfrom above by the main spindle, i, which passes down through thecentre of the adjustable tubes of the feed-hopper, and terminatesin a convex foot. This foot rests in a concavity in the top ofthe disc…
Mechanical drawing
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